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  1. en.wikipedia.org › wiki › SpaceXSpaceX - Wikipedia

    t. e. Space Exploration Technologies Corporation, commonly referred to as SpaceX, is an American spacecraft manufacturer, launch service provider, defense contractor and satellite communications company headquartered in Hawthorne, California. The company was founded in 2002 by Elon Musk with the goal of reducing space transportation costs and ...

  2. Features The mass of the James Webb Space Telescope is about half that of the Hubble Space Telescope.Webb has a 6.5 m (21 ft)-diameter gold-coated beryllium primary mirror made up of 18 separate hexagonal mirrors. The mirror has a polished area of 26.3 m 2 (283 sq ft), of which 0.9 m 2 (9.7 sq ft) is obscured by the secondary support struts, giving a total collecting area of 25.4 m 2 (273 sq ft).

    • Next Generation Space Telescope (NGST; 1996–2002)
    • Astronomy
    • 50.5K
  3. In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the early universe. The inflationary epoch is believed to have lasted from 10 −36 seconds to between 10 −33 and 10 −32 seconds after the Big Bang. Following the inflationary period, the universe continued to ...

  4. Starship is a two-stage super heavy-lift launch vehicle under development by SpaceX.It is the largest and most powerful rocket ever flown. Starship's primary objective is to lower launch costs significantly via economies of scale.This is achieved by reusing both rocket stages, increasing payload mass to orbit, increasing launch frequency, creating a mass-manufacturing pipeline, and adapting it ...

  5. en.wikipedia.org › wiki › NASANASA - Wikipedia

    The National Aeronautics and Space Administration (NASA / ˈ n æ s ə /) is an independent agency of the U.S. federal government responsible for the civil space program, aeronautics research, and space research.Established in 1958, it succeeded the National Advisory Committee for Aeronautics (NACA) to give the U.S. space development effort a distinctly civilian orientation, emphasizing ...

  6. Station elements as of December 2022[update] (exploded view) The International Space Station(ISS) is a large space stationassembledand maintained in low Earth orbitby a collaboration of five space agencies: NASA(United States), Roscosmos(Russia), JAXA(Japan), ESA(Europe), CSA(Canada), and their contractors. ISS is the largest space station ever ...

  7. en.wikipedia.org › wiki › AstronomyAstronomy - Wikipedia

    Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, meteoroids, asteroids, and comets.

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